扭振阶梯形变幅杆频率方程的一般表示

利用变截面杆扭报方程和边界条件，导出的扭振阶梯形变幅杆的频率方程，在S1=S2，或l1=l2时，并不适于实际情况．本文首先导出了扭振声传输线方程，并用之对阶梯形变幅杆的频率方程作了一般表示．

The frequency equation for a torsional vibration step transformer, deduced from the equation for a variable cross-section transfomer, is not fit for the case S1= S2, or l1= l2. In this paper, the equation of acoustic transmission line for torsio nal vibration is fist derived and then applied to formulate tlie frequency equation of a step transformer